85509319406 has 16 divisors (see below), whose sum is σ = 146847786624. Its totient is φ = 36581755704.

The previous prime is 85509319391. The next prime is 85509319411. The reversal of 85509319406 is 60491390558.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5416460 + ... + 5432223.

It is an arithmetic number, because the mean of its divisors is an integer number (9177986664).

Almost surely, 2^85509319406 is an apocalyptic number.

85509319406 is a deficient number, since it is larger than the sum of its proper divisors (61338467218).

85509319406 is a wasteful number, since it uses less digits than its factorization.

85509319406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10849255.

The product of its (nonzero) digits is 1166400, while the sum is 50.

The spelling of 85509319406 in words is "eighty-five billion, five hundred nine million, three hundred nineteen thousand, four hundred six".